Steamboat Springs  Putting together a unique trail for the Town Challenge Mountain Bike Race Series would be tough for most people.

But for Steamboat Springs Series Director Gretchen Sehler, that’s the fun part.

With the Dog Days of Summer cross-country on tap, and on Emerald Mountain again, Sehler managed to find another unique trail.

“Every race is just a little bit different,” Sehler said. “I don’t think I’ve ever used the same trail twice. It’s like a puzzle, and I love it.”

The race begins at 5:30 p.m. Wednesday with children’s events. Pro and expert divisions begin at 6 p.m. with subsequent classes going off in waves.

The pro/expert ride starts behind Howelsen Ice Arena and goes on the chariot track up toward Bluff’s Loop. It continues through the Culvert Trail, Brian’s Worry, the Emerald Meadows Loop and onto Lupine. It then goes up Blair Witch to Quarry Mountain and up Abby’s to Stairway to Heaven. From there, it goes to Flag Road, Hudson Connector, Blair Witch and Larry’s. It goes across Orton Meadow to Molly’s, the Gas Line and Robbie’s Cut.

“Some of these trails that we’re using I haven’t used in four or five years,” Sehler said.

Registration opens at 4:30 p.m. Day-of registration is $30 for adults and $20 for children.